meters not accurate below 0.01 ohms

[Knobhead]

The guys at Test Meters (sponsors) gave me the phone number of a company that hires equipment.
I’ll try and find it for you.

 

[Spark_shark]

You could use a ductor, which measure milli/micro ohms, but as mentioned earlier, there very expensive

 

[Knobhead]

Electrical Test Equipment

Look for Ductors

 

[peterhardacher]

Cheers

 

[Knobhead]

Megger DLRO200 Digital Microhmmeter | Hire | Inlec

 

[peterhardacher]

That's very helpfull thanks tony these are expensive wonder how much to buy ? This is a great starting point for me even though my firm should be telling me this not other way round lol but knowledge is power and if they want my signature they need to provide the correct equipment for me to do my job

 

[Knobhead]

I’ve had access to a ductor at all the companies I’ve worked for. It’s an invaluable bit of kit.

 

[peterhardacher]

There only 3500 haha

 

[Bobster]

The megger ltw 425 on that site is the loop tester i use which measures down to 0.001ohm. Only £379 an that's without discount.

 

[ian.settle1]

Max ZS on a 400 amp fuse for a 5 s disconnection time is 0.096 and higher fuses are. Lower

Which is 9.6 times higher than 0.01

 

[peterhardacher]

I ment 0.1 ohm haha this is the reason I post on here cos its good to chat to other guys bout these things and to get ya mistakes pointed out lol ( no o es perfect ) . I be honest I had not heard of this it was a another of the lads to mention this which has lead me to do some research and start asking some questions

 

[peterhardacher]

Am I totally mis informed about this 0.1 ohm accuracy thing ?? Has any one else heard of this

 

[Sintra]

OP have a look at the attached file.

https://www.dropbox.com/s/tlgl6xsxunrwzf8/Megger Low Resistance Testing.pdf

 

[peterhardacher]

Thanks some useful information there

 

[vaughant]

My megger meter went to 4dp,would have been fine for the job.
think it's a megger 286 from memory,were about £500 a few years back.